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The apps in the Mac App Store are set to receive some solid enhancements including push notifications, sandboxing and delta updates.

For enhanced security, apps will have a built-in sandbox mode whilst developers will have the ability to send "delta updates", which are effectively 'patch based' updates, meaning the entire app will not have to re-downloaded with every update.Apps will also be able to send push notifications to users and just like iOS apps, can also have in-app purchases.

Phil Schiller also touted that the Mac App Store has become the number one retailer for PC software, overtaking even Best Buy.

Graham is a regular contributor to MacStories, a law and economics student at university, and a fan of great TV shows. With a particular passion for telling stories with the aid of data and visualizations, there is a high likelihood that he wrote a story if you see a graph on MacStories.